The song was recorded by Karen O and the Kids, a group consisting of O, Zinner, and several other prominent indie rock musicians, and released as the lead single from the film's soundtrack on August 25, 2009.

[1] O says she began writing with the hope of paying homage to her favorite movie music through "organic melodies, really simple performances, [and] a lot of emotion"[7] that "both kids and adults would appreciate.

According to Andrzej Lukowski of Drowned in Sound, "with the children to back her up and bulk her out, O can permit herself her frailest, most open tones".

[17] Andrew Gensler of T: The New York Times Style Magazine described "All Is Love" as an "ebullient leadoff" and an "infectious singalong anthem".

[10] Mikael Wood of the Los Angeles Times wrote that "Karen O proves she's capable of still more, floating her ethereal vocals over charmingly ramshackle folk-pop arrangements" and that her "unique singing defines [...] "All Is Love".

[18] Hermione Hoby of The Guardian claims the song is "as sweetly joyous as Arcade Fire as reimagined by Sesame Street and has a chorus that will thaw icy hearts.

[13] Justin Jacobs of Paste magazine describes "All Is Love" as a "seriously sunshiney tune" and remarks, "If you had any sort of imagination as a child, the time to start getting excited is now.

"[5] Ronald Hart of The Hollywood Reporter claims that on "All Is Love", Karen O and the Kids "perfectly capture childlike innocence" and that the track's "whimsical melody that's lighter and brighter" than the songs produced by the musician's regular bands.

NARAS stated that Walt Disney Records had voluntarily reported the error and withdrawn the nomination, and that "The Academy ha[d] complied with the label’s request.